Drilling device

ABSTRACT

A drilling device for supporting a drill with the axis of the drill held in a desired relationship to a workpiece and permitting relative axial movement of the drill toward the workpiece.

United States Patent 1 1 1111 3,833,313 Gallion Sept. 3, 1974 DRILLINGDEVICE 2,622,458 12/1952 Jenkins 77/55 G [76] Inventor: Jacque K.Gallion, 1410 S. Oak Cliff Blvd Dallas, Tex 7520 FOREIGN PATENTS ORAPPLICATIONS Filed: g 1969 565,964 12/1944 Great Britain 408/112 21Appl. No.: 849,113

Primary Examiner-Francis S. I-Iusar Related Apphcatlon Data Attorney,Agent, or Firm-Clegg, Cantrell & Crisman [63] Continuation-impart ofSer. No. 575,740, Aug. 29,

1966, Pat. No. 3,464,295.

[52] US. Cl. 408/112 [57] ABSTRACT [51] Int. Cl B23b 45/14 Field Of S cu 77/55 G, 5 A drilling device for supporting a drill with the axis of241 the drill held in a desired relationship to a workpiece andpermitting relative axial movement of the drill to- [56] References Citeward the workpiece.

UNITED STATES PATENTS 2,454,372 11/1948 Billeter 77/55 G 7 Claims, 9Drawing Figures I4III4IIII4 ass-3.313

PATENTED W 31974 am III 4 INVENTOR JACQLJE K; GALLION ATTQRNE Y PATENIEDSE? SHEET 2 [IF 4 A T TORNE Y PATENTEUSEP 31m 3.833.313

SHEET 30F 4 INVENTOR JACQUE K. GALLION ATTORNEY DRILLING DEVICE CROSSREFERENCE The application is a continuation-in-part of my copendingapplication Ser. No. 575,740 filed Aug. 29, 1966 and now US. Pat. No.3,464,295.

This invention relates to a drilling device and more particularly to acompact assembly to be used in conjunction with a power hand drill toaid in maintaining the path of the drill through the workpiece.

There are many instances when it is desirable to drill a straight holeperpendicular or at an angle to a workpiece, in which it is impractical,inconvenient, or impossible to use a drill press due to theinaccessability or demeanor of the workpiece. For example, it isimpractical, if not impossible, to use a drill press to drill an angularhole in a wall or ceiling or within a small enclosure.

It is the principal object of this invention to provide a simple,inexpensive device which may be readily used in conjunction with a handdrill to drill straight holes in a workpiece and which may be easilyused for drilling at various positions and angles of drilling.

An additional object of this invention is the provision of a devicehaving the features as just described wherein a small workpiece may beheld securely to prevent its rotation during the drilling operation.

In accordance with this invention, a device is provided which is readilyadaptable to a hand drill. The device has a base for resting on aworkpiece, means for holding a drill in a fixed position and means forbiasing the drill away from the workpiece whereby pressure must beapplied to the rear or handle of the drill to cause it to move to andengage the workpiece. The base includes a hole or opening for allowing adrill bit to pass through to a workpiece. There can also be provided aplate member which also includes an opening and which is hingedlyattached at one side to one side of the base in such a manner that theangle of the device relative to a workpiece may be varied. The base hasthree upright tubular members perpendicularly attached to the top of itand spaced about the periphery of the hold. A drill holding member isslideably attached to the tubular members and springs are provided tobias the drill holding member away from the base and against stops whichare provided on the upward end of the tubular members. Thus, a handdrill positioned in the drill holding member will be biased to a firstposition away from the workpiece. To drill a hole in a workpiece uponwhich the device is situated, pressure must be applied to the back ofthe drill in order to overcome the biasing effect of the springs andallow the drill bit to pass through the holes in the base and platemember and engage the workpiece.

The means for hingedly attaching the plate member to the base are rodswhich are extendably included in the upright tubular members and extendthrough the base. To enable the angle between the plate member and thebase to be varied, it is necessary that at least one of the rods isextendably connected to the plate member. The means for extendablyconnecting the rod to the plate member consist of a short rod includedwithin the plate member and hingedly connected to that rod. Thumbscrews,or the like, are provided which go through the base and tubular memberto bear upon the rods included therein, thus firmly supporting them atthe desired extension. As a result of this configuration, the rodextendably connected to the plate member may be extended to position thedevice in such a manner as to enable the device to drill angular holes.A second advantage of this configuration is that all of the rods may beextended uniformly and a small workpiece inserted and held between thebase and plate member.

In one embodiment of the device, a drill chuck having a shank isreleasably included in the drill holding member. Bearings are providedbetween the chuck of the drill and the drill holding member to allow itto rotate about an axis perpendicular to the base and passing throughthe opening included therein. In a second embodiment of the device thedrill holding member includes a combination of bearings or the like,which are adapted to conform to the outline of the chuck of a standardpower drill. The bearings act to position the drill for rotation aboutan axis perpendicular to the base and passing through the hole includedtherein. In a third embodiment of the invention, an insert having acavity for receiving a drill chuck is releasably supported by the drillholding member. Bearings are provided for supporting the insert forrotation about the axis of the drill.

The novel features believed characteristic of this invention are setforth in the appended claims. The invention itself, however, as well asfurther objects and advantages thereof will best be understood byreference to the following detailed description read in conjunction withthe accompanied drawings, wherein:

FIG. 1 is a pictorial view of the device of the present inventionshowing it resting on a workpiece and set for drilling an angular hole;

FIG. 2 is a side elevation partially in cross section showing the devicehaving a workpiece between the base and plate member;

FIG. 3 is a plan view of the base;

FIG. 4 is a plan view of the drill holding member and bearings includedtherein;

FIG. 5 is a fragmentary enlarged vertical section showing the bearingsadaptable for a releasably mounted drill chuck;

FIG. 6 is a fragmentary enlarged vertical section showing the bearingsadaptable to the chuck of a stan- I dard size power drill;

FIG. 7 is a plan view of another embodiment of the invention;

FIG. 8 is a vertical section of the embodiment shown in FIG. 7 similarto FIGS. 5 and 6; and

FIG. 9 is a vertical section similar to FIG. 8 showing still anotherembodiment of the invention.

Referring now more specifically to the drawings, the numeral 10 denotesthe present device generally. The device 10 is shown in FIG. 1 restingon a workpiece 12 in a tilted position for drilling slanted holes. Apower hand drill 15 is positioned in the device ll) in the manner inwhich it would normally be used. The device 10 includes a base 14 havinga hole 6 in it for the purpose of allowing a drill bit 8 mounted in thedrill 15 to pass through the base to engage the workpiece 12. The base14 has three upright tubular members 16 attached perpendicularly to itto support the drill holding plate member 18 which is slideably attachedto them. It should be noted at this point that the number of tubularmembers could be varied and that the choice of three for this embodimentis only for the purpose of illustration. Each tubular member 16 has anenlarged end or stop 22 provided at its upper end. Springs 20 encirclethe tubular members 16 and serve to bias the drill holding member 18 ata position against the stops 22 whereby a drill 15 positioned in themember 18 will be at a first position above the workpiece 12.

As may be seen in FIGS. 1 and 2, there can also be provided a platemember 26 hingedly attached to the base 14 so that the angle of theapparatus and consequently the drill and drill bit 8, relative to theworkpiece 12 may be varied. Rods 23, 24, and are included within thetubular member 16 and extend below the base 14 to a pivotally connect tothe plate member 26. Rods 23 and 24 pivotally connect to one side of theplate member 26 by hinges 28 and 29 and rod 25 pivotally connects to afourth rod 30 at hinge 34. The rod 30 is included in a hole 32 in theplate member 26, the hole 32 being on the side of the plate member 26opposite that where rods 23 and 24 pivotally connect to it. The hole 32extends into the plate member 26 perpendicular to the opposite side. Therod 30 is extendable within the hole 32 so that the angle of the planeof the base 14 and plate member 26 may be varied as shown in FIG. 1.Thumbscrews 36 are provided to bear upon the rods 23, 24, and 25 andhold them at varying lengths of extension through the base 14 such thatthe angle of drilling may be adjusted as shown in FIG. 1 by tilting thedevice and extending rod 25 further through the base which consequentlycauses rod 30 to extend within the hole 32. Rod 25 preferably includescalibrations 38 to aid in determination of the drilling angle. A furtheradvantage of this device is that all of the rods 23, 24, and 25 may beextended uniformly as shown in FIG. 2 such that a workpiece 29 can beheld securely between the base 14 and plate member 26.

As may be seen in FIGS. 4 and 5, a drill chuck 38 may be releasablymounted in the drill holding member 18 by means of a flange 42. Thedrill chuck 38 is held in position for rotation about the drilling axiswhich is perpendicular to the plane of the base 14 and passes throughthe openings 4 and 6 by means of flange 42 which turns in bearings 40.It will be noted that the desired alignment is provided by having theflange 42 supported in a desired plane by bearings 40. The drill chuck38 has a shank 44, which is sized to fit a chuck 46 of hand drill 48,extending upward along its line of rotation. To use this particularembodiment of the device, it is necessary to first position a drill bitin the releasable drill chuck 38 and then attach the chuck 46 of handdrill 48 to the shank 44.

In a second embodiment of the device, shown in FIG. 6, the drill holdingmember 18 includes a combination of roller bearings 50 and taperedbearings 52 adapted to conform to the outline of the chuck 54 of astandard size hand drill which is denoted here by the numeral 56. Itshould be noted at this point that this embodiment would be easilyadaptable to fit almost any type of hand drill, either powered ornonpowered, by changing the size of the opening in the drill holdingmember 18 and the size and configuration of the bearing includedtherein. To operate the device of the second embodiment it is simplynecessary to position the hand drill such that the chuck is centered inthe bearings 50 and 52 and by applying pressure to the rear of thehandle of the drill 56 causing the drill holding member 18 to slidedownward which in turn causes the drill bit included in the drill topass through the openings 4 and 6 and engage the workpiece 12.

A third embodiment of the invention shown in FIGS. 7 and 8 of thedrawings, is similar to the embodiment of the invention shown in FIGS. 4and 5. However, rather than use the drill holding member 18 incombination with a drill chuck 38 having a flange 42, there is provideda drill sleeve 60 having a flange 62. A different bearing structure isshown in the third embodiment of the invention, although a bearing asshown in FIG. 5 can be used. Thus, in accordance with third specificexample of the invention, a sleeve bearing 64 is provided in the drillholding member 18 for permitting substantially friction-free rotation ofthe drill sleeve 60 therein. Opposed grooves 66 and 68 are formed in thefaces 70 and 72 of the flange 62 and the drill holding member 18. Thegrooves 66 and 68 define a race in which a plurality of ball bearings 74move. The flange 62 is thereby supported in a desired plane by bearings74 in a manner similar to that in which the flange 42 was supported bybearings 40. A retaining ring 76 can be provided for engaging a groove78 to hold the drill sleeve 60 in a position as shown. With the drillsleeve in position and held as shown, the bearings 74 will be retainedin the race defined by the grooves 66 and 68. The rim of the flange 62is preferably enlarged at 80 to insure that the bearings 74 do notescape from their position between the member 18 and the flange 62 andalso to minimize the amount of dust and other foreign particles whichmight otherwise find their way into the bearing structure.

A cavity 82 is defined within the drill sleeve 60. The cavity 82 isshaped to conform to a drill chuck of a drill to be used with thedevice. The end 84 of the cavity is sufficiently large that a drillchuck 86 can be inserted into the cavity. The opening 88 in the oppositeend is restricted, it only being necessary that opening 88 besufficiently large to permit a drill 90 held in the chuck to passthrough, although the opening 88 can permit a portion of the drill chuckto extend there through as shown. The drill sleeve 60 supports the drillchuck with the axis of the drill chuck normal to the plane of the flange62 or having a known relationship thereto.

In accordance with the embodiment of the invention shown in FIGS. 7 and8, it is contemplated that the drill sleeve 60 will be releasablyconnected to the drill holding member 18 by the retaining ring 76. Aplurality of the drill sleeves such as drill sleeve 60 can be providedwith each of the drill sleeves fitting a particular drill chuck. Byfurnishing drill sleeve 60 having cavities of the appropriate size andconfiguration, the device of the present invention, as exemplified byFIGS. 7 and 8, can be used with drills of many different models anddifferent manufacturers type without the necessity for provision of aseparate chuck 38, as described as reference 4 and 5 of the drawing. Itis contemplated that the drill chuck 86 will fit quite snugly within thecavity 82 and accordingly, the bushing 60 will rotate with the chuck 86.As the chuck 86 and the bushing 60 rotate as a unitary number, therewill not be substantial wear of the wall of the cavity 82 andaccordingly, excellent alignment of the drill chuck, and according withdrill 90, will be maintained through many uses of the device.

The embodiment of the invention shown in FIG. 9 of the drawings issimilar to that shown in FIG. 8. Rather than provide the drill sleeve 60with a cavity to conform to the drill chuck, the cavity receives a chucksleeve 100 which suitably includes a radial flange for supporting thechuck sleeve in the cavity 82 of the drill sleeve. lf flange 102 isprovided, the reduced diameter portion of cavity 82 is not required forpositioning the sleeve. Mating lands 104 and 106 can be provided forpreventing relative rotation between the chuck sleeve 100 and the drillsleeve 60 and facilitating easy insertion and removal of the chucksleeve 100, although such is not necessary. The chuck sleeve 100 isprovided with a cavity 110 for receiving the drill chuck 86 in a mannersimilar to that described with reference to the cavity 82 of FIG. 8. Thechuck sleeve 100 and drill sleeve 82 cooperate to maintain the desiredalignment of the drill chuck while permitting free rotation thereof.Provision of the chuck sleeve 100 is desirable in that chuck sleeveshaving cavities of different sizes to accomodate drill chucks ofdifferent sizes can more readily be used as it is only necessary towithdraw one chuck sleeve and insert another of cavity size when adifferent size drill is used. The bearing structure is not disturbedwhen a drill having a chuck of different size is used. Further, thechuck sleeve 100 can be of less expensive construction than the drillsleeves 60.

To operate the device of the first embodiment of the present invention,a hand drill is attached to the shank of the drill chuck included in thedevice and a bit is secured in the chuck. If an angular hole is desired,the angle of the plate member relative to the base is adjusted byreference to the calibrated scale on the third rod. The thumbscrewholding that rod is loosened and the rod extended until the desiredangle is shown on the calibrated scale. The thumbscrew is then tightenedand the device is placed on the workpiece or the area where the hole isto be drilled. Pressure is applied to the rear of the drill to overcomethe biasing effect of the springs. The bit will then pass through theholes in the base and plate member and engage the area to be drilled.Operation of the second, third and fourth embodiments is similar to thatof the first, except there is no drill chuck included in the device andtherefore the chuck of the drill to be used is positioned in the holdingmember for rotation about an axis perpendicular to the base.

While the drilling device of this invention has been described withreference to particular embodiments, it is, of course, understood thatthis description is not to be construed in a limiting sense. Otherembodiments of the invention, as well as modifications of the disclosedembodiments will be apparent to persons skilled in the art uponreference to this specification.

What I claim is:

1. A drilling device readily adaptable to a simple hand drill to aid indrilling straight holes comprising:

a base means having a large opening, said base means being suitable forresting on a work piece;

a drill sleeve for supporting a drill for rotation about a predeterminedaxis, said drill sleeve having a radially extending flange normal to theaxis of rotation;

said drill sleeve having a cavity defined therein for receiving at leasta portion of the chuck of a hand drill with a drill held by the chuckextending through the element, the wall of said cavity substantiallyconforming to the shape of the portion of the chuck received thereinwhereby the sleeve is engageable by the chuck and rotatable with the LIIchuck, the axis of the drill and the predetermined axis beingsubstantially co-axial when the sleeve is rotatable with the chuck;

a drill holding plate having an opening for rotatably receiving thedrill sleeve, said opening being substantially aligned with the openingin the base;

means releaseably holding said sleeve in said opening in said drillholding plate;

bearing means supporting said flange to align the axis of the drill withthe predetermined axis with said drill sleeve positioned in said openingin said drill holding plate;

said bearing means including a plurality of ball bearings and opposedcircular grooves formed in the lower surface of said flange and theupper surface of said drill holding plate, said opposed groovesproviding a race in which said ball bearings move;

means supporting said drill holding plate on said base for movementperpendicular to the base with the position of the drill holding platebeing variable between a first position in which a bit carried by saiddrill is positioned above the workpiece and asecond position in whichsaid drill engages the workpiece; and

means extending between said plate and said base for biasing said drillholding plate to the first position.

2. A drilling device as defined in claim 1 wherein additional bearingmeans extends along the wall of the opening of the plate for reducingthe frictional resistance between the drill sleeve and the plate as saiddrill sleeve rotates in said opening.

3. A drill holding device readily adaptable to a simple hand drill toaid in drilling straight holes comprising:

a base means having a large opening, said base being suitable forresting on a work piece;

a drill holding means for supporting a drill for rotation about apredetermined axis, said drill holding means including a drill sleeveand a removable chuck sleeve, said drill sleeve having a cavity thereinfor receiving said chuck sleeve, said chuck sleeve defining a cavity forreceiving at least a portion of the chuck of a hand drill with the drillheld by the chuck extending through the element, the wall of the cavityof the chuck sleeve substantially conforming to the shape of the portionof the chuck received therein and engaging the chuck to cause the chucksleeve and drill sleeve to rotate with the chuck and supporting thechuck so that the axis of the drill held by the chuck is co-axial withthe axis of the chuck sleeve and drill sleeve;

a drill holding plate having an opening for receiving the drill sleeve,said opening being substantially aligned with the opening in the base;

bearing means rotatably supporting said drill sleeve in the opening ofsaid drill holding plate to align the axis of the drill with the axes ofthe chuck sleeve and drill sleeve,

means supporting said drill holding plate for movement perpendicular tothe base means with the position of the drill holding plate beingvariable between a first position in which a bit carried by said drillis positioned above the workpiece and a second position in which saiddrill engages the workpiece; and

ting surface of the chuck sleeve and preventing relative rotationtherebetween.

7. A drilling device as defined in claim 3 wherein said drill holdingsleeve further includes a radially extending flange normal to the axisof rotation and wherein the bearing means includes a plurality of ballbearings and opposed circular grooves formed in the lower surface of theflange and the upper surface of the drill holding plate, said opposedgrooves providing a race in which said ball bearings move.

1. A drilling device readily adaptable to a simple hand drill to aid indrilling straight holes comprising: a base means having a large opening,said base means being suitable for resting on a work piece; a drillsleeve for supporting a drill for rotation about a predetermined axis,said drill sleeve having a radially extending flange normal to the axisof rotation; said drill sleeve having a cavity defined therein forreceiving at least a portion of the chuck of a hand drill with a drillheld by the chuck extending through the element, the wall of said cavitysubstantially conforming to the shape of the portion of the chuckreceived therein whereby the sleeve is engageable by the chuck androtatable with the chuck, the axis of the drill and the predeterminedaxis being substantially coaxial when the sleeve is rotatable with thechuck; a drill holding plate having an opening for rotatably receivingthe drill sleeve, said opening being substantially aligned with theopening in the base; means releaseably holding said sleeve in saidopening in said drill holding plate; bearing means supporting saidflange to align the axis of the drill with the predetermined axis withsaid drill sleeve positioned in said opening in said drill holdingplate; said bearing means including a plurality of ball bearings andopposed circular grooves formed in the lower surface of said flange andthe upper surface of said drill holding plate, said opposed groovesproviding a race in which said ball bearings move; means supporting saiddrill holding plate on said base for movement perpendicular to the basewith the position of the drill holding plate being variable between afirst position in which a bit carried by said drill is positioned abovethe workpiece and a second position in which said drill engages theworkpiece; and means extending between said plate and said base forbiasing said drill holding plate to the first position.
 2. A drillingdevice as defined in claim 1 wherein additional bearing means extendsalong the wall of the opening of the plate for reducing the frictionalresistance between the drill sleeve and the plate as said drill sleeverotates in said opening.
 3. A drill holding device readily adaptable toa simple hand drill to aid in drilling straight holes comprising: a basemeans having a large opening, said base being suitable for resting on awork piece; a drill holding means for supporting a drill for rotationabout a predetermined axis, said drill holding means including a drillsleeve and a removable chuck sleeve, said drill sleeve having a cavitytherein for receiving said chuck sleeve, said chuck sleeve defining acavity for receiving at least a portion of the chuck of a hand drillwith the drill helD by the chuck extending through the element, the wallof the cavity of the chuck sleeve substantially conforming to the shapeof the portion of the chuck received therein and engaging the chuck tocause the chuck sleeve and drill sleeve to rotate with the chuck andsupporting the chuck so that the axis of the drill held by the chuck isco-axial with the axis of the chuck sleeve and drill sleeve; a drillholding plate having an opening for receiving the drill sleeve, saidopening being substantially aligned with the opening in the base;bearing means rotatably supporting said drill sleeve in the opening ofsaid drill holding plate to align the axis of the drill with the axes ofthe chuck sleeve and drill sleeve, means supporting said drill holdingplate for movement perpendicular to the base means with the position ofthe drill holding plate being variable between a first position in whicha bit carried by said drill is positioned above the workpiece and asecond position in which said drill engages the workpiece; and meansbiasing said drill holding plate to the first position.
 4. A drillingdevice as defined in claim 3 wherein the cavity of the drill sleeveincludes a tapered portion supporting the chuck sleeve in said cavity.5. A drilling device as defined in claim 3 wherein the chuck sleeveincludes a radial flange means for supporting said sleeve in the cavityof the drill sleeve.
 6. A drilling device as defined in claim 3 whereinlands are formed in the surface of the cavity of said drill sleeve forengaging corresponding lands on the abutting surface of the chuck sleeveand preventing relative rotation therebetween.
 7. A drilling device asdefined in claim 3 wherein said drill holding sleeve further includes aradially extending flange normal to the axis of rotation and wherein thebearing means includes a plurality of ball bearings and opposed circulargrooves formed in the lower surface of the flange and the upper surfaceof the drill holding plate, said opposed grooves providing a race inwhich said ball bearings move.